Filbur FC-3120 3.5 Sq.Ft. Filter Cartridge Sku: FIL-FC-3120-HZ91 This is a brand new part comes with a full manufacturer warranty!!! This sale transaction is for only this part number: FC-3120. Cartridges are produced with genuine Reemay filter media and durable polyurethane end caps. Prevents harmful bacteria from growing on the cartridge. Less bacteria results in a reduction of foul odors, algae, black mold and other harmful contaminants which foul a cartridge. protection lasts as long as the cartridge itself. Easier to clean than any other filter. 100 percent polyester core for strength and durability. Polyester Microban sheath for ease of maintenance. Extruded and reinforced PVC center cores. Embossed part numbers. Break-resistant bands. No pad adapters needed. Fits Spa-In-A-Box 3-1/2-square feet pool and spa filter. Replaces Unicel, Pleatco and Aladdin filter cartridge models C-2305, PSB3.5, 10301. TERMS OF SALE: If, after receiving this item you discover that it was not the one you wanted, simply return it for a full refund within 14 days. You will have to pay for the return shipping charges. Refund is void if you have installed, used or damaged the item in any way. Item must be returned with its original box, packing materials and instructions. Payment via PayPal must be received within 3 days of transaction and prior to shipping. SHIPPING: Shipping charge will be based upon location. Please use the shipping calculator or request a shipping quote. International buyers: Customs fees, duties, taxes, tariffs other fees are your responsibility. Arrival time will depend on your location. If you have any questions, feel free to ask. Thank you for visiting!